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Abdelhady SA, Abuiessa SA, Elhamammy RH, El-Deeb NM, El-Mas MM. Hepatoprotective effect of prenatal celecoxib in weaning preeclamptic rats: Role of HMGB1/MAPKs signaling. Eur J Pharmacol 2024; 978:176769. [PMID: 38925287 DOI: 10.1016/j.ejphar.2024.176769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 06/19/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024]
Abstract
Preeclampsia (PE) is often associated with multiple organ damage that remains noticeable postnatally. Here, we tested the hypotheses that antenatal therapy with nonsteroidal antiinflammatory drugs (NSAIDs) refashions liver damage induced by PE in weaning rats and that the high mobility group box 1 (HMGB1) signaling modulates this interaction. PE was induced by pharmacologic nitric oxide deprivation during the last week of gestation (Nω-nitro-L-arginine methyl ester, L-NAME, 50 mg/kg/day, oral gavage). Compared with control rats, weaning PE rats revealed substantial rises in serum transaminases together with histopathological signs of hepatic cytoplasmic changes, portal inflammation, and central vein dilation. While gestational NSAIDs reversed the elevated transaminases, they had no effects (celecoxib, naproxen) or even worsened (diclofenac) the structural damage. Molecularly, celecoxib was the most effective NSAID in (i) reversing PE-evoked upregulation of hepatic HMGB1 gene expression and concomitant increments and decrements in mitogen-activated protein kinases MAPKERK and MAPKp38 expression, respectively, and (ii) elevating and suppressing serum interleukin-10 and tumor necrosis factor-α, respectively. Alternatively, rises in serum interleukin-1β and shifts in macrophage polarization towards an inflammatory phenotype caused by PE were comparably diminished by all NSAIDs. The data disclose an advantageous therapeutic potential for gestational celecoxib over diclofenac or naproxen in controlling hepatic dysfunction and HMGB1-interrelated inflammatory and oxidative sequels of PE.
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Affiliation(s)
- Sherien A Abdelhady
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Pharos University in Alexandria, Canal El Mahmoudia Street, Beside Green Plaza Complex 21648, Alexandria, Egypt
| | - Salwa A Abuiessa
- Department of Pharmacology and Toxicology, Alexandria University, Alexandria, Egypt
| | - Reem H Elhamammy
- Department of Pharmaceutical Biochemistry, Alexandria University, Alexandria, Egypt
| | - Nevine M El-Deeb
- Department of Pathology, Alexandria University, Alexandria, Egypt
| | - Mahmoud M El-Mas
- Department of Pharmacology and Toxicology, Alexandria University, Alexandria, Egypt; Department of Pharmacology and Toxicology, College of Medicine, Kuwait University, Jabriya, Kuwait.
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Chapp AD, Shan Z, Chen QH. Acetic Acid: An Underestimated Metabolite in Ethanol-Induced Changes in Regulating Cardiovascular Function. Antioxidants (Basel) 2024; 13:139. [PMID: 38397737 PMCID: PMC10886048 DOI: 10.3390/antiox13020139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/13/2024] [Accepted: 01/18/2024] [Indexed: 02/25/2024] Open
Abstract
Acetic acid is a bioactive short-chain fatty acid produced in large quantities from ethanol metabolism. In this review, we describe how acetic acid/acetate generates oxidative stress, alters the function of pre-sympathetic neurons, and can potentially influence cardiovascular function in both humans and rodents after ethanol consumption. Our recent findings from in vivo and in vitro studies support the notion that administration of acetic acid/acetate generates oxidative stress and increases sympathetic outflow, leading to alterations in arterial blood pressure. Real-time investigation of how ethanol and acetic acid/acetate modulate neural control of cardiovascular function can be conducted by microinjecting compounds into autonomic control centers of the brain and measuring changes in peripheral sympathetic nerve activity and blood pressure in response to these compounds.
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Affiliation(s)
- Andrew D. Chapp
- Department of Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA
| | - Zhiying Shan
- Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, MI 49931, USA;
| | - Qing-Hui Chen
- Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, MI 49931, USA;
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Ricchiuti N, Chenoweth K, Gao X, Bare DJ, Yan J, Ai X. Long-Term Alcohol-Activated c-Jun N-terminal Kinase Isoform 2 Preserves Cardiac Function but Drives Ca 2+-Triggered Arrhythmias. Cells 2023; 12:2233. [PMID: 37759456 PMCID: PMC10527640 DOI: 10.3390/cells12182233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Long-term alcohol consumption leads to cardiac arrhythmias including atrial fibrillation (AF), the most common alcohol-related arrhythmia. While AF significantly increases morbidity and mortality in patients, it takes years for an alcoholic individual undergoing an adaptive status with normal cardiac function to reach alcoholic cardiomyopathy. The underlying mechanism remains unclear to date. In this study, we assessed the functional role of JNK2 in long-term alcohol-evoked atrial arrhythmogenicity but preserved cardiac function. Wild-type (WT) mice and cardiac-specific JNK2dn mice (with an overexpression of inactive dominant negative (dn) JNK2) were treated with alcohol (2 g/kg daily for 2 months; 2 Mo). Confocal Ca2+ imaging in the intact mouse hearts showed that long-term alcohol prolonged intracellular Ca2+ transient decay, and increased pacing-induced Ca2+ waves, compared to that of sham controls, while cardiac-specific JNK2 inhibition in JNK2dn mice precluded alcohol-evoked Ca2+-triggered activities. Moreover, activated JNK2 enhances diastolic SR Ca2+ leak in 24 h and 48 h alcohol-exposed HL-1 atrial myocytes as well as HEK-RyR2 cells (inducible expression of human RyR2) with the overexpression of tGFP-tagged active JNK2-tGFP or inactive JNK2dn-tGFP. Meanwhile, the SR Ca2+ load and systolic Ca2+ transient amplitude were both increased in ventricular myocytes, along with the preserved cardiac function in 2 Mo alcohol-exposed mice. Moreover, the role of activated JNK2 in SR Ca2+ overload and enhanced transient amplitude was also confirmed in long-term alcohol-exposed HL-1 atrial myocytes. In conclusion, our findings suggest that long-term alcohol-activated JNK2 is a key driver in preserved cardiac function, but at the expense of enhanced cardiac arrhythmogenicity. Modulating JNK2 activity could be a novel anti-arrhythmia therapeutic strategy.
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Affiliation(s)
| | | | | | | | - Jiajie Yan
- Department of Physiology and Cell Biology, College of Medicine/Wexner Medical Center, The Ohio State University, 333 W 10th Avenue, Columbus, OH 43210, USA
| | - Xun Ai
- Department of Physiology and Cell Biology, College of Medicine/Wexner Medical Center, The Ohio State University, 333 W 10th Avenue, Columbus, OH 43210, USA
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Stress-driven cardiac calcium mishandling via a kinase-to-kinase crosstalk. Pflugers Arch 2021; 473:363-375. [PMID: 33590296 PMCID: PMC7940337 DOI: 10.1007/s00424-021-02533-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/19/2021] [Accepted: 02/02/2021] [Indexed: 01/25/2023]
Abstract
Calcium homeostasis in the cardiomyocyte is critical to the regulation of normal cardiac function. Abnormal calcium dynamics such as altered uptake by the sarcoplasmic reticulum (SR) Ca2+-ATPase and increased diastolic SR calcium leak are involved in the development of maladaptive cardiac remodeling under pathological conditions. Ca2+/calmodulin-dependent protein kinase II-δ (CaMKIIδ) is a well-recognized key molecule in calcium dysregulation in cardiomyocytes. Elevated cellular stress is known as a common feature during pathological remodeling, and c-jun N-terminal kinase (JNK) is an important stress kinase that is activated in response to intrinsic and extrinsic stress stimuli. Our lab recently identified specific actions of JNK isoform 2 (JNK2) in CaMKIIδ expression, activation, and CaMKIIδ-dependent SR Ca2+ mishandling in the stressed heart. This review focuses on the current understanding of cardiac SR calcium handling under physiological and pathological conditions as well as the newly identified contribution of the stress kinase JNK2 in CaMKIIδ-dependent SR Ca2+ abnormal mishandling. The new findings identifying dual roles of JNK2 in CaMKIIδ expression and activation are also discussed in this review.
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Yang M, Barrios J, Yan J, Zhao W, Yuan S, Dong E, Ai X. Causal roles of stress kinase JNK2 in DNA methylation and binge alcohol withdrawal-evoked behavioral deficits. Pharmacol Res 2021; 164:105375. [PMID: 33316384 PMCID: PMC7867628 DOI: 10.1016/j.phrs.2020.105375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/20/2020] [Accepted: 12/06/2020] [Indexed: 11/27/2022]
Abstract
Excessive binge alcohol intake is a common drinking pattern in humans, especially during holidays. Cessation of the binge drinking often leads to aberrant withdrawal behaviors, as well as serious heart rhythm abnormalities (clinically diagnosed as Holiday Heart Syndrome (HHS)). In our HHS mouse model with well-characterized binge alcohol withdrawal (BAW)-induced heart phenotypes, BAW leads to anxiety-like behaviors and cognitive impairment. We have previously reported that stress-activated c-Jun NH(2)-terminal kinase (JNK) plays a causal role in BAW-induced heart phenotypes. In the HHS brain, we found that activation of JNK2 (but not JNK1 and JNK3) in the prefrontal cortex (PFC), but not hippocampus and amygdala, led to anxiety-like behaviors and impaired cognition. DNA methylation mediated by a crucial DNA methylation enzyme, DNA methyltransferase1 (DNMT1), is known to be critical in alcohol-associated behavioral deficits. In HHS mice, JNK2 in the PFC (but not hippocampus and amygdala) causally enhanced total genomic DNA methylation via increased DNMT1 expression, which was regulated by enhanced binding of JNK downstream transcriptional factor c-JUN to the DNMT1 promoter. JNK2-specific inhibition either by an inhibitor JNK2I or JNK2 knockout completely offset c-JUN-regulated DNMT1 upregulation and restored the level of DNA methylation in HHS PFC to the baseline levels seen in sham controls. Strikingly, either JNK2-specific inhibition or genetic JNK2 depletion or DNMT1 inhibition (by an inhibitor 5-Azacytidine) completely abolished BAW-evoked behavioral deficits. In conclusion, our studies revealed a novel mechanism by which JNK2 drives BAW-evoked behavioral deficits through a DNMT1-regulated DNA hypermethylation. JNK2 could be a novel therapeutic target for alcohol withdrawal treatment and/or prevention.
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Affiliation(s)
- Mei Yang
- Department of Physiology & Biophysics, Rush University Medical Center, Chicago, IL, 60607, USA
| | - Jasson Barrios
- Department of Physiology & Biophysics, Rush University Medical Center, Chicago, IL, 60607, USA
| | - Jiajie Yan
- Department of Physiology & Biophysics, Rush University Medical Center, Chicago, IL, 60607, USA
| | - Weiwei Zhao
- Department of Physiology & Biophysics, Rush University Medical Center, Chicago, IL, 60607, USA
| | - Shengtao Yuan
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, 210009, China
| | - Erbo Dong
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, College of Medicine, University of Illinois at Chicago, IL, 60612, USA.
| | - Xun Ai
- Department of Physiology & Biophysics, Rush University Medical Center, Chicago, IL, 60607, USA.
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Eby JM, Majetschak M. Effects of ethanol and ethanol metabolites on intrinsic function of mesenteric resistance arteries. PLoS One 2019; 14:e0214336. [PMID: 30893362 PMCID: PMC6426218 DOI: 10.1371/journal.pone.0214336] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/11/2019] [Indexed: 12/14/2022] Open
Abstract
Evidence suggests that ethanol-induced hypertension is associated with increased cardiovascular responsiveness to vasopressors in vivo and enhanced reactivity of isolated arteries to vasopressors ex vivo. The underlying mechanisms are not well understood and the contribution of ethanol metabolites to vascular effects induced by ethanol consumption are unclear. Mesenteric resistance arteries were harvested from Sprague-Dawley rats. Pressure myography was utilized to test effects of ethanol, acetaldehyde and phosphatidylethanol on myogenic tone and on vasoconstriction induced by phenylephrine, arginine vasopressin (aVP), endothelin-1 and KCl. Ethanol, acetaldehyde and phosphatidylethanol concentrations were monitored during the experiments. Ethanol concentrations in the vessel bath decreased with a half-life of 25min; acetaldehyde and phosphatidylethanol concentrations remained constant. Pretreatment with ethanol dose-dependently increased the potency of phenylephrine to induce vasoconstriction 4-fold (p<0.01). These effects were comparable when arteries were pre-treated with a single dose of ethanol for 30min and when ethanol concentrations were kept constant during 30min and 60min of pretreatment. While ethanol also dose-dependently increased the potency of aVP to induce vasoconstriction 1.7-fold (p<0.05), it did not affect vasoconstriction induced by endothelin-1 or KCl. Acetaldehyde pre-treatment (30 min) dose-dependently increased the potency of phenylephrine to induce vasoconstriction 2.7-fold (p<0.01) but did not affect other vasoconstrictor responses. Phosphatidylethanol did not affect any vasoconstrictor responses. Ethanol and its metabolites did not affect myogenic tone. These data suggest that ethanol and acetaldehyde selectively sensitize intrinsic constrictor responses upon activation of vascular α1-adrenergic and/or vasopressin receptors at clinically relevant concentrations. Our findings support the concept that enhanced vasoreactivity to vasoactive hormones contributes to the development of hypertension induced by ethanol consumption. Ex vivo exposure of resistance arteries to ethanol and acetaldehyde resembles effects of chronic ethanol consumption on intrinsic vascular function, and thus could serve as test platform to evaluate interventions aimed to mitigate vascular effects associated with ethanol consumption.
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Affiliation(s)
- Jonathan M. Eby
- Department of Surgery, Loyola University Chicago Stritch School of Medicine, Maywood, Illinois, United States of America
- Alcohol Research Program (ARP), Loyola University Chicago Stritch School of Medicine, Maywood, Illinois, United States of America
| | - Matthias Majetschak
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
- * E-mail:
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El-Mas MM, Abdel-Rahman AA. Role of Alcohol Oxidative Metabolism in Its Cardiovascular and Autonomic Effects. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1193:1-33. [PMID: 31368095 PMCID: PMC8034813 DOI: 10.1007/978-981-13-6260-6_1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Several review articles have been published on the neurobehavioral actions of acetaldehyde and other ethanol metabolites as well as in major alcohol-related disorders such as cancer and liver and lung disease. However, very few reviews dealt with the role of alcohol metabolism in the adverse cardiac and autonomic effects of alcohol and their potential underlying mechanisms, particularly in vulnerable populations. In this chapter, following a brief overview of the dose-related favorable and adverse cardiovascular effects of alcohol, we discuss the role of ethanol metabolism in its adverse effects in the brainstem and heart. Notably, current knowledge dismisses a major role for acetaldehyde in the adverse autonomic and cardiac effects of alcohol because of its low tissue level in vivo. Contrary to these findings in men and male rodents, women and hypertensive individuals are more sensitive to the adverse cardiac effects of similar amounts of alcohol. To understand this discrepancy, we discuss the autonomic and cardiac effects of alcohol and its metabolite acetaldehyde in a model of hypertension, the spontaneously hypertensive rat (SHR) and female rats. We present evidence that enhanced catalase activity, which contributes to cardioprotection in hypertension (compensatory) and in the presence of estrogen (inherent), becomes detrimental due to catalase catalysis of alcohol metabolism to acetaldehyde. Noteworthy, studies in SHRs and in estrogen deprived or replete normotensive rats implicate acetaldehyde in triggering oxidative stress in autonomic nuclei and the heart via (i) the Akt/extracellular signal-regulated kinases (ERK)/nitric oxide synthase (NOS) cascade and (ii) estrogen receptor-alpha (ERα) mediation of the higher catalase activity, which generates higher ethanol-derived acetaldehyde in female heart. The latter is supported by the ability of ERα blockade or catalase inhibition to attenuate alcohol-evoked myocardial oxidative stress and dysfunction. More mechanistic studies are needed to further understand the mechanisms of this public health problem.
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Affiliation(s)
- Mahmoud M El-Mas
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Abdel A Abdel-Rahman
- Department of Pharmacology and Toxicology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA.
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Lo H, Lin HH, Chen JK, Situmorang JH, Lai CC. Involvement of NMDA Receptors, Nitric Oxide, and GABA in Rostral Ventrolateral Medulla in Acute Ethanol-Induced Cardiovascular Responses in Rats. Alcohol Clin Exp Res 2018; 42:1418-1430. [PMID: 29846938 DOI: 10.1111/acer.13800] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/22/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND Consumption of ethanol (EtOH) (alcohol) has many effects on physiological functions, particularly those in the central nervous system (CNS) and cardiovascular system. Acute excessive intake of EtOH (alcohol intoxication) may cause hypotension and tachycardia. In this study, we examined the mechanistic involvement of glutamatergic N-methyl-d-aspartate (NMDA) receptors, nitric oxide (NO), and γ-aminobutyric acid (GABA) pathways in the CNS in acute EtOH-induced cardiovascular effects. METHODS EtOH was administered by intraperitoneal (IP) injection in Sprague-Dawley rats. The blood pressure (BP) and heart rate (HR) were measured in conscious and in urethane-anesthetized rats. Inhibitors were applied by intracerebroventricular (ICV) injection or by microinjection into rostral ventrolateral medulla (RVLM). Microdialysis was used to determine the level of glutamate, NO, and GABA in the RVLM. RESULTS IP injection of EtOH (3.2 g/kg) caused a significant decrease in BP in conscious and anesthetized rats and a late increase in HR in conscious rats. The cardiovascular effects of EtOH were significantly attenuated by ICV or by RVLM post treatment with ketamine (an NMDA receptor antagonist), N5-(nitroamidino)-L-2,5-diaminopentanoic acid (L-NNA; a NO synthase inhibitor), or bicuculline (a GABA receptor antagonist). EtOH caused an increase in the level of glutamate, NO, and GABA in the RVLM during the hypotensive responses. RVLM posttreatment with ketamine blocked the increase in NO and GABA levels; post treatment with L-NNA blocked the increase in GABA level. CONCLUSIONS Our results indicate that EtOH augmentation of glutamatergic NMDA receptors/NO/GABA pathways in the RVLM may participate in the hypotensive effects induced by acute administration of EtOH.
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Affiliation(s)
- Hsuan Lo
- Master and Ph.D. Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Hsun-Hsun Lin
- Department of Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Jun-Kai Chen
- Master and Ph.D. Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Jiro Hasegawa Situmorang
- Master and Ph.D. Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chih-Chia Lai
- Master and Ph.D. Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
- Department of Pharmacology, School of Medicine, Tzu Chi University, Hualien, Taiwan
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Situmorang JH, Lin HH, Lo H, Lai CC. Role of neuronal nitric oxide synthase (nNOS) at medulla in tachycardia induced by repeated administration of ethanol in conscious rats. J Biomed Sci 2018; 25:8. [PMID: 29382335 PMCID: PMC5791364 DOI: 10.1186/s12929-018-0409-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 01/15/2018] [Indexed: 01/14/2023] Open
Abstract
Background Intake of ethanol (alcohol) has been shown to influence cardiovascular function; the underlying brain mechanism remains unclear. Noting that nitric oxide (NO) system in the CNS is involved in the regulation of cardiovascular function, the present study examined the role of NO in medulla in ethanol-induced cardiovascular changes. Methods Ethanol was administered by oral gavage at dose of 3.2 g/kg once every day for 8 consecutive days. Changes in blood pressure (BP) and heart rate (HR) in response to ethanol were measured by radiotelemetry method in freely moving female Sprague-Dawley rats. NO modulators were applied by intracerebroventricular (ICV) injection. The protein levels of nitric oxide synthase (NOS) and NO content in rostroventral medulla were measured by Western blot and nitrate/nitrite colorimetric assay kit, respectively. Results Ethanol intake had little effects on basal BP and HR following 8 consecutive day treatments. A significant increase in HR but not BP following ethanol intake was observed at 6th and 8th, but not at 1st and 4th day treatments as compared with saline group. A decrease in the protein expression of neuronal NOS (nNOS) but not inducible NOS or endothelial NOS and a decline in the level of NO in the medulla 30 min after ethanol administration was observed at 8th day treatment. ICV treatment with NO donors attenuated ethanol-induced tachycardia effects at 8th day treatment. Ethanol produced significantly tachycardia responses when ICV nNOS inhibitors were given at 1st day treatment. Conclusion Our results suggest that medulla nNOS/NO pathways play an important role in ethanol regulation of HR.
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Affiliation(s)
- Jiro Hasegawa Situmorang
- Master and PhD Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Hsun-Hsun Lin
- Department of Physiology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Hsuan Lo
- Master and PhD Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chih-Chia Lai
- Master and PhD Programs in Pharmacology and Toxicology, School of Medicine, Tzu Chi University, Hualien, Taiwan. .,Department of Pharmacology, School of Medicine, Tzu Chi University, Hualien, Taiwan.
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Ni J, Li Y, Li W, Guo R. Salidroside protects against foam cell formation and apoptosis, possibly via the MAPK and AKT signaling pathways. Lipids Health Dis 2017; 16:198. [PMID: 29017559 PMCID: PMC5635575 DOI: 10.1186/s12944-017-0582-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 09/26/2017] [Indexed: 12/13/2022] Open
Abstract
Background Foam cell formation and apoptosis are closely associated with atherosclerosis pathogenesis. We determined the effect of salidroside on oxidized low-density lipoprotein (ox-LDL)-induced foam cell formation and apoptosis in THP1 human acute monocytic leukemia cells and investigated the associated molecular mechanisms. Methods THP1-derived macrophages were incubated with salidroside for 5 h and then exposed to ox-LDL for 24 h to induce foam cell formation. Cytotoxicity, lipid deposition, apoptosis, and the expression of various proteins were tested using the CCK8 kit, Oil Red O staining, flow cytometry, and western blotting, respectively. Results Ox-LDL treatment alone promoted macrophage-derived foam cell formation, while salidroside treatment alone inhibited it (p < 0.05). The number of early/late apoptotic cells decreased with salidroside treatment in a dose-dependent manner (p < 0.05). Salidroside dramatically upregulated nuclear factor erythroid 2-related factor 2, but had no effect on heme oxygenase-1 expression; moreover, it markedly downregulated ox-LDL receptor 1 and upregulated ATP-binding cassette transporter A1. Salidroside also obviously decreased the phosphorylation of JNK, ERK, p38 MAPK, and increased that of Akt. However, the total expression of these proteins was not affected. Conclusion Based on our findings, we speculate that salidroside can suppress ox-LDL-induced THP1-derived foam cell formation and apoptosis, partly by regulating the MAPK and Akt signaling pathways.
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Affiliation(s)
- Jing Ni
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yan Chang Zhong Road, Shanghai, 200072, China
| | - Yuanmin Li
- Department of Cardio-Thoracic Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yan Chang Zhong Road, Shanghai, 200072, China
| | - Weiming Li
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yan Chang Zhong Road, Shanghai, 200072, China.
| | - Rong Guo
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yan Chang Zhong Road, Shanghai, 200072, China.
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Sallam MY, El-Gowilly SM, Abdel-Galil AGA, El-Mas MM. Cyclosporine counteracts endotoxemia-evoked reductions in blood pressure and cardiac autonomic dysfunction via central sGC/MAPKs signaling in rats. Eur J Pharmacol 2017; 797:143-152. [DOI: 10.1016/j.ejphar.2017.01.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/13/2017] [Accepted: 01/19/2017] [Indexed: 12/23/2022]
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12
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Modulation by Central MAPKs/PI3K/sGc of the TNF-α/iNOS-dependent Hypotension and Compromised Cardiac Autonomic Control in Endotoxic Rats. J Cardiovasc Pharmacol 2016; 68:171-81. [DOI: 10.1097/fjc.0000000000000400] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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13
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Lim DY, Shin SH, Lee MH, Malakhova M, Kurinov I, Wu Q, Xu J, Jiang Y, Dong Z, Liu K, Lee KY, Bae KB, Choi BY, Deng Y, Bode A, Dong Z. A natural small molecule, catechol, induces c-Myc degradation by directly targeting ERK2 in lung cancer. Oncotarget 2016; 7:35001-14. [PMID: 27167001 PMCID: PMC5085205 DOI: 10.18632/oncotarget.9223] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 04/10/2016] [Indexed: 12/19/2022] Open
Abstract
Various carcinogens induce EGFR/RAS/MAPK signaling, which is critical in the development of lung cancer. In particular, constitutive activation of extracellular signal-regulated kinase 2 (ERK2) is observed in many lung cancer patients, and therefore developing compounds capable of targeting ERK2 in lung carcinogenesis could be beneficial. We examined the therapeutic effect of catechol in lung cancer treatment. Catechol suppressed anchorage-independent growth of murine KP2 and human H460 lung cancer cell lines in a dose-dependent manner. Catechol inhibited ERK2 kinase activity in vitro, and its direct binding to the ERK2 active site was confirmed by X-ray crystallography. Phosphorylation of c-Myc, a substrate of ERK2, was decreased in catechol-treated lung cancer cells and resulted in reduced protein stability and subsequent down-regulation of total c-Myc. Treatment with catechol induced G1 phase arrest in lung cancer cells and decreased protein expression related to G1-S progression. In addition, we showed that catechol inhibited the growth of both allograft and xenograft lung cancer tumors in vivo. In summary, catechol exerted inhibitory effects on the ERK2/c-Myc signaling axis to reduce lung cancer tumor growth in vitro and in vivo, including a preclinical patient-derived xenograft (PDX) model. These findings suggest that catechol, a natural small molecule, possesses potential as a novel therapeutic agent against lung carcinogenesis in future clinical approaches.
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Affiliation(s)
- Do Young Lim
- The Hormel Institute, University of Minnesota, MN, USA
| | - Seung Ho Shin
- The Hormel Institute, University of Minnesota, MN, USA
- Program in Biomedical Informatics and Computational Biology, University of Minnesota, Minneapolis, MN, USA
| | - Mee-Hyun Lee
- The Hormel Institute, University of Minnesota, MN, USA
- The China-US (Henan) Cancer Institute, Zhengzhou, Henan, China
| | | | | | - Qiong Wu
- The China-US (Henan) Cancer Institute, Zhengzhou, Henan, China
- The Pathophysiology Department, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Hunan, China
| | - Jinglong Xu
- The Pathophysiology Department, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Hunan, China
- The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, China
| | - Yanan Jiang
- The Pathophysiology Department, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Hunan, China
- The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, China
| | - Ziming Dong
- The Pathophysiology Department, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Hunan, China
- The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, China
| | - Kangdong Liu
- The China-US (Henan) Cancer Institute, Zhengzhou, Henan, China
- The Pathophysiology Department, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Hunan, China
- The Affiliated Cancer Hospital, Zhengzhou University, Zhengzhou, Henan, China
- The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, China
| | - Kun Yeong Lee
- The Hormel Institute, University of Minnesota, MN, USA
| | - Ki Beom Bae
- The Hormel Institute, University of Minnesota, MN, USA
| | - Bu Young Choi
- Pharmaceutical Science and Engineering, School of Convergence Bioscience and Technology, Seowon University, Cheongju, Chungbuk, South Korea
| | - Yibin Deng
- The Hormel Institute, University of Minnesota, MN, USA
| | - Ann Bode
- The Hormel Institute, University of Minnesota, MN, USA
| | - Zigang Dong
- The Hormel Institute, University of Minnesota, MN, USA
- The China-US (Henan) Cancer Institute, Zhengzhou, Henan, China
- The Pathophysiology Department, The School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Hunan, China
- The Affiliated Cancer Hospital, Zhengzhou University, Zhengzhou, Henan, China
- The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, Zhengzhou, China
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14
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Yang Y, Bai T, Sun P, Lian LH, Yao YL, Zheng HX, Li X, Li JB, Wu YL, Nan JX. Thymoquinone, a bioactive component of Nigella sativa Linn seeds or traditional spice, attenuates acute hepatic failure and blocks apoptosis via the MAPK signaling pathway in mice. RSC Adv 2015. [DOI: 10.1039/c4ra15065a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study is the first report on hepatoprotective effect of thymoquinone induced byd-GalN/LPS. Thymoquinone alleviated the progress ofd-GalN/LPS induced acute hepatic failure via attenuating hepatocytes apoptosis and MAPK signaling pathway.
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15
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El-Mas MM, Abdel-Rahman AA. Ser/thr phosphatases tonically attenuate the ERK-dependent pressor effect of ethanol in the rostral ventrolateral medulla in normotensive rats. Brain Res 2014; 1577:21-8. [PMID: 24978604 DOI: 10.1016/j.brainres.2014.06.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 02/14/2014] [Accepted: 06/21/2014] [Indexed: 11/16/2022]
Abstract
We recently reported that microinjection of ethanol into the rostral ventrolateral medulla (RVLM) elicits modest increases in local extracellular signal-regulated kinase (ERK) and blood pressure (BP) in conscious normotensive rats. In this study, we tested the hypothesis that RVLM ser/thr phosphatases dampen the ERK-dependent pressor effect of ethanol in normotensive rats. We show that the pressor response elicited by intra-RVLM ethanol (10 μg) was (i) abolished following local ERK inhibition with PD98059 (1 μg) and (ii) associated with significant reduction in local phosphatase activity. Inhibition of the RVLM ser/thr phosphatase activity by okadaic acid (OKA, 0.4 μg) or fostriecin (15 pg) caused significant increases in blood pressure (BP) and potentiated the magnitude and duration of the pressor response as well as the phosphatase inhibition elicited by subsequent intra-RVLM administration of ethanol. Intra-RVLM acetaldehyde (2 μg), the main metabolic product of ethanol, caused no changes in BP or RVLM phosphatase activity but it produced significant increases in BP and inhibition of local phosphatase activity in rats treated with OKA or fostriecin. Together, the RVLM phosphatase activity acts tonically to attenuate the ERK-dependent pressor effect of ethanol or acetaldehyde in normotensive rats.
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Affiliation(s)
- Mahmoud M El-Mas
- Department of Pharmacology and Toxicology, School of Medicine, East Carolina University, Greenville, NC, USA.
| | - Abdel A Abdel-Rahman
- Department of Pharmacology and Toxicology, School of Medicine, East Carolina University, Greenville, NC, USA.
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